February 17, 2003
"LIGO - A New Window on the Universe"
Session on "Probing the Universe for Gravity Waves: A First Look with LIGO" (Laser Interferometer Gravity Wave Observatory), Annual Meeting of the American Association for the Advancement of Science, Denver, Colorado
Also see: the slides.

December 14, 2001Remarks
Balancing National Security and Open "Scientific Communication: Implications of September 11th for the Research University"
Session: Defining Needed New Areas of Study and Research, National Academy of Sciences
Also see: the slides.

December 3, 2001Keynote Address
Federation of American Societies for Experimental Biology